Home / 156,938.86-216,579.90-85,323.70

Finding the Fourth Proportional to 156,938.86, 216,579.90 and 85,323.70

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Solution

The fourth proportional to 156,938.86, 216,579.90 and 85,323.70 is: 117,749.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,938.86 : 216,579.90 = 85,323.70 : x
  2. Step 2: Convert to fraction form
    156,938.86/216,579.90 = 85,323.70/x
  3. Step 3: Cross multiply
    156,938.86x = 216,579.90 × 85,323.70
  4. Step 4: Simplify right side
    156,938.86x = 18,479,398,413.63
  5. Step 5: Solve for x
    x = 18,479,398,413.63/156,938.86
  6. Step 6: Final answer
    x = 117,749.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.